“…Reports of GT prevalence among adults range from 0.28% to 2.4% (Hume, 1975), with most falling between 1.0% and 2.5% (Assimakopoulos et al , 2002). Many risk factors have been proposed for GT: hormonal disturbances and oral contraceptive use (Waltimo, 1991); psychological findings (Redman et al , 1965); diabetes mellitus (Wysocki and Daley, 1987) – although Guggenheimer et al (2000) found no difference; allergic conditions such as atopy (Marks and Simons, 1979) hay fever and rhinitis (Marks and Czarny, 1984); dermatological diseases such as pustular psoriasis (Wysocki and Daley, 1987); seborrheic dermatitis (Rahminoff and Muhsam, 1957), pityriasis pilaris (Wysocki and Daley, 1987); and Reiter's Syndrome (O'Keefe et al , 1973; Weathers et al , 1974; Pogrel and Cram, 1988). There is also a reported correlation with Down Syndrome (Ercis et al , 1996) and fissured tongue (FT) (Eidelman et al , 1976).…”